NLC Electrical Grid Exam Correctly
Answered
Volt (V) - ✅✅ A measurement of electrical pressure
Voltage - ✅✅ Electric pressure or electromotive force
What are the effects of voltage? - ✅✅ 1. Amount of insulation needed
2. The separation between line conductors
3. Safe working practices
4. The types of tools needed to work on the lines
Voltage is measured between how many points? - ✅✅ 2 points
Typical distribution voltages - ✅✅ 1. 7,200/12,470
2. 7,600/13,200
3. 12,000/20,800
4.19,900/34,500
How many readings for transmission voltages? - ✅✅ 1
Typical transmission system voltages - ✅✅ 69,000 115,000 138,000 230,000
345,000 500,000 765,000
Why do transmission lines only have one reading? - ✅✅ Transmission lines do
not carry a neutral conductor
What produces magnetic fields? - ✅✅ Electric current or Amperage
Ampere - ✅✅ a unit of electric current equal to a flow of one coulomb per
second.
Coulomb - ✅✅ Quantity measurement of electrons
How many electrons in one coulomb? - ✅✅ 6,250,000,000,000,000,000
What tool is used to measure amps or current flow? - ✅✅ A clamp on Ammeter
Answered
Volt (V) - ✅✅ A measurement of electrical pressure
Voltage - ✅✅ Electric pressure or electromotive force
What are the effects of voltage? - ✅✅ 1. Amount of insulation needed
2. The separation between line conductors
3. Safe working practices
4. The types of tools needed to work on the lines
Voltage is measured between how many points? - ✅✅ 2 points
Typical distribution voltages - ✅✅ 1. 7,200/12,470
2. 7,600/13,200
3. 12,000/20,800
4.19,900/34,500
How many readings for transmission voltages? - ✅✅ 1
Typical transmission system voltages - ✅✅ 69,000 115,000 138,000 230,000
345,000 500,000 765,000
Why do transmission lines only have one reading? - ✅✅ Transmission lines do
not carry a neutral conductor
What produces magnetic fields? - ✅✅ Electric current or Amperage
Ampere - ✅✅ a unit of electric current equal to a flow of one coulomb per
second.
Coulomb - ✅✅ Quantity measurement of electrons
How many electrons in one coulomb? - ✅✅ 6,250,000,000,000,000,000
What tool is used to measure amps or current flow? - ✅✅ A clamp on Ammeter
